Magneto



P. F. BESSY.

MAGNEo.

APPLICATION ULED DEC. 3,1191@ y Patented Dec. 7, 1920.-

4 SHEETS-SHEET l O i. *i gn-J1.l i b QN N v www EEE V 3V/M l Inuenfr."Beter Eesy P. F. BESSY.

` MAGNETO.

'- APPLICATION lFILEDDEC. 3, 1918.

Patented 136011920.

4 SHEETS-SHEET 2.

Inventor;

P. F. BESSY. MAGNETO.

APPLICATION FILED UEC.3, |918.

1,361,436. Patented Dee. 7,1920.

4 SHEETS-SHEET 3.

Inventor:

feter esqy,

' P. F. BESSY.

MAGNETO. i APPLxcATloN FILD nEc.3,191a.

1,361,436, Panted Dee. 7,1920.

74 SHEETS-SHEET 4.

In Lietor.' Beter l-esfsyf particularly to magnetos of thetype employf"UNITED STATES 1 PATENTl OFFICE.

vmariana F. Eclissi?,y or WHITI'NG, INDIAN@ MAGNETO.

I' Specification of Letters Patentf -Patnted Dec"l 7, 1920.

Application led December 3,1918. SerialNo. 265,125.

and useful Improvements in Magnetos, of

`which the following is a specification.,`

My resent invention relates to improveing a stationary `windingpermanently connected tothe circuit and in which current is inducedthrough the 'coaction of vrelatively stationary field magnets and rotorsor inductors.

I have aimed `to provide an extremely simple, economical, durable andeflicient form'of magneto embodyingk a Casin comprisinga plurality ofparts readiy assembled and disassembled in manufacture and repair. y,

I have further aimed kto provide a casing .supported from acradle onball `bearings so that the advance' and retardation of the spark maybe'effected by the rocking of the magneto casing as a whole.

Another object is to provide a construction which may be readilylchanged for rotation in either direction `without changing any of theparts.

Again I haveaimedto provide a form of housing of novel shapeJ carryingthe breaker or interrupter and the distributer, the movvingvpartsofwhich may be driven from the ma neto shaft through bevel or wormgears.

' have further aimed to provide pole` pieces of improved'form; andanimproved.

form of breaker or-v interrupter and cover therefor embodying a safetylock, f

`With thesel and other objects in view which will'hereinafter appear,theinvention includes the novel features of construction and arrangementand combination of paits hereinafter described and defined KAbythe'appended claims.'

An embodiment of which Figure 1 is a central longitudinal sectionthrough the magneto.Ik Fig. 3 is a section on line of Fig. Fig 4 is adiagrammatic view-illustrating the circuits.

Fig. 5 is a plan view of the breaker or my invention is illustrated inthe accompanying drawings inl moved. A Fig. 6 isa detail view of the-breaker or interrupter. Fig. 7 is an inside view of thebreaker 60 covershowing the safety lock.

Fig. Sis a detail of the distributer, and, Fig.` 911s aperspectivedetail of one of the pole pieces.-

.Re erring by reference characters'to thisI 65 drawing, the 'numeral .ldesignates a cradle interrupter, the breaker -cover being reor framehaving a suitable base portion def signed to be secured in anyconvenient inan ner and 4which is'provided at each end with iupsta-ndingportions provided with cylindrical bearing portions indicatedat la, the

upper halves of the bearing portions being removable for convenience ofassembly.

The numeral 2 designates the magneto ca siiig as a whole which comprisesfourA parts, to wit, a main portion 2l carrying the field magnet ormagnets and pole piecesfa portion 2b carrying the breaker andydistributer and condenser, and the end caps 2 and 2d respectively.These respective parts 80 areprovided with interlocking edges `asclearly shown in Fig. lso that when assembled they are held in properrelation and alinement and the end` caps. are provided with extensions,3 and 5, which-are mounted 85 to oscillate in the bearing portion la ofthe cradle.

The casing is preferably constructed of brass and I find it desirable toform the eX- tension 3 inthe shape of a steel ring liav- 90 ing annularflanges 3a resting in an annular channel or rabbet in the end cap andsecured in position by screws 3b.

Interposed between cylindrical extension 3 and the bearing portion 1a ofthe cradle 95 as an antifriction bearing .which may convenientlycompriseinner and outer bearin @this bo'ssland the bearing portion of'the' 105 cradle.

The magneto shaft is designated 6 and is rotatably mounted within andsupported b, the endv caps through the interposed ball bearings 7i 110The shaft is projected at one end through the cylindrical boss orextension 3 and is provided with means for attachment of a drive gear orthe like (not shown) such, means being shown as a tapered portionlta andscrewthrea-ded extension 6b. The bear-Q. ings at either end may beprotected by dust caps 8.

Pinned or otherwisesecured to the shaft within the portion 2n of thecasing are a pair of 'diametrically arranged rotors 9 which havecylindrical core extensions 1() extending toward each other whichrevolve within the stationary winding 11. These rotors coaetwit1 thepole pieces 12 of the magneto which preferably comprise two pairsofinner and outer magnets as shown in Figs. 1 and The pole pieces are setin openings formed in opposite sides ofthe casing portion 2a and may beconveniently secured therein by casting said portion around the polepieces, and the arms of the magnets are secured to the pole pieces by Igrooved to provide coacting points.

screws as shown in Fig. 2 or by any otherconvenient means.

Each pole piece, as shown in Fig. 9, com- `prises a pair of end portions12Z1 thickened and curved on their inner faces to conformto the path ofrotation of the rotors, and a connecting web 12b.

The winding 11 as above stated is stationary, and comprises an innerprimary coil or winding llband an outer secondary windc' ing 112inclosed within an insulated casing 11-,one end of the primary coilbeing groundedand the other end being connected to the interrupter andcondenser 13 as in'- dicated in the diagrammatic view Fig. 4, in whichthe heavy lineindicates the primary winding. y The secondary coil orwinding 11c is connected to the primary winding and to thedistributerindicated at 14 from which the current is conveyed to the spark plugsin.v

the customary manner. A

I. prefer to .secure tothe end of the secondary winding 11C a copperstrip 11l which contacts with the carbon contact 15 seated in an openingin the insulating casing 11a. This insulated casing is provided with aboss or projection 11X having an inclined wall which is engaged by theflaring mouth of a tubular insulating bushing or sleeve 416 which passesthrough an opening in the magneto casing and is held in position by aspring arm 17 pivotally connected at one end to the casing by screw 18and havingv a laterallydisposed forked portion at the opposite. endadapted to overlie a shoulder 16a on the bushing 16. By swinging the lspring arm 17 laterally the bushing may be removed. The screw 18 mayalso -serve as the ground connection for the primary winding.

' The bushing 16 carries a binding post 18 reifiee havinga' tubular boreat its lower end within which is'slidably mounted a secondcar- `boncontact 19 which is pressed downwardly by a spring 20.

, The binding post is connected to the conductor leading to thedistributer in any approved manner. To provide a safety gap in case anyspark plug is inactive I connect to the binding post a spring contactarm 21"the free end of which bears against the headiof a contact member22 preferably removably seated in an opening in` an insulator cap-orbushing 23 carried by an annular iiange 24 on the magneto casing, a partof the wall is cut away for ventilation purposesand is covered byreticulated material 24a of sufficient fineness to prevent ignition ofany gasolene vapors that might surround themagnetofThe lower end of thecontact member 22 is provided with spark points or terminals properlyspaced from the headv of a screw 25 set into the casing, the head of thescrew being cross l preferably arrange' in the same 'plane transverselyof the casing and they rotate 0n axes that converge in the axis of themain drive shaft 6.

One of these shafts (13a) has a bevel gear 26 fast on its lower endwhich meshes with a bevel gear 27 onl the magneto shaft 6. "l

Shaft 13a carries a second bevel gear 2S which mesheswith a ybevel gear29 on the shaft 14a.

rl`hese shafts 13a and 141 are preferably journaled in suitable bushingsas clearly shown in Fig. 3. p

Within the bottom of the chamber formed by the annularwall or extension2X is located the vbreaker disk 30 which .is of ring form as shown inFigs. 3 and 5, and is re-,

33 carried bythe ring and contacts at its v opposite or free end withthe adjustable con- .tac't screw 34 carried by a lug 35?L of the arcshaped bar 35- secured ,to the breaker plate but insulated therefrom.The opposite end of the-bar 35 is provided with a vertical tubularprojection 35" which carries a slid- Vmediate portion of the breaker armis designed to coact with the cam 38 carried by 'ing contact plunger -36projecting through y .screw 34 by'a spring 39, one-endof which issecured to the breaker arm while its other end bears against a lixedpost or pin 40. Thev contact plunger 36 -is forced downi ward by aspring 4l and this spring also acts atits upper end on the lower end ofa sliding Contact 42 held in the upper end of tubular projection 35".This slidingcontact 42 is designed to coact ywitha contact member 43 onthe breaker covery44, being provided with a' binding post 45` designedto 'be connected by a wire (not shown) with the usual short circuitinswitch on the dash of the automobile. improved breaker housing cover isdesigned as 'a safety ycover and is arranged so as to enablel themagneto to be locked on the housing in short circuited position. f

f To thisvend I provide the cover with radially movable locking pin 46designed to engage an opening or recess in the corresponding portion ofthe breaker housing which pin is normally 'pressed inward out ofpengagement with said recess by 'a spring 46a. A cross bar or yoke 47is swiveled to the inner side of the coverand is provided with a pin 47adesigned to be acted upon by a lug or projection 48n on the lock barrel48,

The yoke 47 has a cam shaped end de-y signed to coact with the head ofthe locking pin and force the latter outward into locking position asshown in Fig. 7 and whenin this position the opposite end of the yokecontacts with the post 43, thus short circuiting the magneto andpreventing driving of the car.

The distributer per se may be of the ordinary or any desired.construction and as these are well understood by those skilled in theart specific description thereof herein is deemed unnecessary. l

It may be noted that by my arrangement of breaker and distributer on thecasinfrgsection and the manner ofdriving them I can readily adapt themagneto to engines of any number 'of cylinders.

In the drawing I have shown it as adapted'for` a four cylinder engine,but if it be desired for a six cylinder, for example, it is onlynecessary to substitute a casing section 2b having the breakeranddistributer shafts at a greater angle and enabling the-use of the properlarger sized gear. on the distributer shaft.

I preferably provide a dust cover 46 for excluding dust from the keyopening when the key is removed, 'which cover may bein the form lof akey or plate'pivoted on the binding post 45 and provided with a knob o1')rejection 46 for operating it. l

aving thus described my invention, what l. In a magneto, a casingcomprising a pair -of substantially (cylindrical members havinginterlocking edges, end plates removably engaging said members, a magnetandv .pole pieces carried by one of said cylindrical members, a shaftjournaled in the end plates and projecting beyond the same, ro- `tors onsaid shaft cooperating with said pole pieces, a stationary vwindingencircling the shaft between said rotors, and breaker and distributermechanisms carried by the other 'cylindrical member, means for drivingsaid mechanisms from said shaft, and a` cradle having bearing portionssupporting the pro jecting ends of said shaft and .abutting against ntheend plates to hold the magnetic casing and end plates together. f '2. Ina magneto, a casing carrying a field t magnet, a main shaft journaled insaid casing and carrying current generating means,

cooperating with said field magnets, radially larranged shafts journaledin said casing, gearing driving said radial shafts from said main shaft,and breaker and distributer mechanism operated from said radial shafts.3. In a magneto, a casing carrying a field magnet, a main shaft,journaled` in said cas ing and carrying current generating meanscooperating with said .field magnets, radially arranged breaker andvdistributer shafts journaled in said casing, gearing interposed betweensaid main and breaker shafts, and' gearing interposed between saidbreaker and distributer shafts. A 1

4. InY a magneto, a multiple part casing having one lpart detachably`and reversibly connected to another-part, one of said parts lcarryingthe current generating means, a main shaft 'journaled in said casing andhaving a drive gear 'withinsaid reversible casing part, breaker anddistributer shafts carried by said lastinamed casing part, gear-. ingconnecting said breaker Aand distributer shafts, one of said shaftscarrying a gear meshing with the gear on the main shaft.

5. I n a' magneto, a multipart casing having one part detachably andreversibly connected to anotherl part, one part carrying thecurrentgenerating means, said ,revers ico ible part carrying angularly arrangedcylindrical projections constituting breaker and distributer housings,interconnected breaker and distributer shafts journaled in saidinterchangeabl'el casing part', a main shaft journaledi'n the casing and.carrying the 4 rotor of the magneto., a gear o-n said main shaft, and agear on the breaker shaft engaging said gearl on the mainsha'f-t.

6. In a magneto, a casing carrying a 1 breaker housing, an' insulatedbinding post passing through an opening in the wall of said casing, abreaker plate detachably held in said housing, an insulated breakercontact member carried by said breaker plate, said member having ahollow part, a slidable contact member in said tubular part adapted to2doA make contact with said binding post, and a spring in said tubularpart bearing on said slidable member.

7. In a magneto, a breaker housing, a cover therefor, a' lock for`fastening .said cover on, and means operated by the key of the lock forshort circuiting the magneto.

8. In a magneto, a breaker housing, a cover therefor, one ofsaidparts-having an annular fiange overlapping the other, a

radially movable locking pin adapted to he passed through aliningopenings in said overlapping parts, a cam bar -foroperating said lockingpin, said cam bar having a part adapted to shortcircuit the magneto whenthe coveris locked, and key controlled means for operating said cam bar.

'9. In a magneto, a breaker housing, a safety cover therefor, keycontrolled means for simultaneously locking said cover and shortcircuitingl the magneto, and a. removable dust protector for coveringthe key opening.

l0. In a magneto, a casing carrying a breaker housing, a binding postcarried by said Casing, a breaker plate removably held in said housing,a spring pressed contact member supported from said breaker plateadapted to make electric connection with said binding post when thebreaker plate is in place, a second spring pressed contact supportedfrom said ,breaker plate and electrically connected, with saidy firstnamed Contact, and a cover for the housing having a binding post formaking electri` cal connection with said last named chii-` tact.

ll. In a magneto, a magneto casing, and field magnets carried thereby, ashaft journaled in saidvcasing, rotors carried by said shaft, a windingencircling the shaft, b'etween the rotors, an insulating casinginclosing said winding, an insulating plug passing through an opening inthe magneto casing and having a part interlocking with a part on saidinsulating casing, and means within said plug for connecting the winding'to' the distributer.

l2. In a magneto, a magneto casing, and field magnets carried thereby, ashaft journaled in said casing, rotors carried by said shaft, a windingencirculating the shaft between the rotors, an insulating casing in`closing said winding, said insulating casing Ahaving an aperture andanannular projection, a contact for the u'f'inding'seated in saidaperture, a tubular insulating plug removably held in an opening in themagneto casing, a binding post carried by said insulating plugand haringa hollow lower end, and a. spring pressed contact member in said lowerend adapted to .make electrical connection with said first namedContact.

13. In a magneto, a magneto casing, and field magnets carried thereby, ashaft journaled in said. casing, rotors carried by said PETER r. BEssY.

